<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>聪友WMS</title>
  <style>
    #load-box {
      visibility: hidden;
      z-index: 2000;
      position: fixed;
      display: flex;
      justify-content: center;
      align-items: center;
      background-color: rgba(0, 0, 0, 0.6);
      width: 100%;
      height: 100vh;
    }
    .loader {
      width: 48px;
      height: 48px;
      display: inline-block;
      position: relative;
    }
    .loader::after,
    .loader::before {
      content: "";
      box-sizing: border-box;
      width: 48px;
      height: 48px;
      border: 2px solid #ddd;
      position: absolute;
      left: 0;
      top: 0;
      animation: rotation 2s ease-in-out infinite alternate;
    }
    .loader::after {
      border-color: #F55C34;
      animation-direction: alternate-reverse;
    }

    @keyframes rotation {
      0% {
        transform: rotate(0deg);
      }
      100% {
        transform: rotate(360deg);
      }
    }
  </style>
</head>
<body>
  <div id="load-box">
    <span class="loader"></span>
  </div>
  <div id="root"></div>
</body>
</html>